By Daniel Davis For Mailonline
Published: 13:45 BST, 3 October 2020 | Updated: 14:04 BST, 3 October 2020
The 20-year-old forward has remained United's primary target this summer, but the club have so far failed to wrap up negotiations with Dortmund remaining steadfast over their £108million valuation.
Sancho was also missing from Dortmund's Super Cup defeat against Bayern Munich on Wednesday with a 'respiratory infection' cited as the reason behind his absence.
Jadon Sancho was missing entirely from Borussia Dortmund's squad for their Freiburg clash
The club confirmed on Saturday afternoon that it is the same issue which has ruled Sancho out from their next fixture.
Roman Burki, Dortmund's first-choice goalkeeper, has also missed out with a similar infection - although the club have confirmed both players have tested negative for coronavirus.
Having missed two games in quick